#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<string.h>
void* my_memmove(void* destination, const void* source, size_t num)
{
	if()
	while (num--)
	{
		*((char*)destination + num) = *((char*)source + num);
	}
}
int main()
{
	int arr[10] = { 0,1,2,3,4,5,6,7,8,9 };
	my_memmove(arr + 2, arr,20);
	int i = 0;
	for(i=0;i<10;i++)
	printf("%d ", arr[i]);
	return 0;
}